1990 Australian Drivers' Championship
The 1990 Australian Drivers' Championship was an Australian motor racing title sanctioned by the Confederation of Australian Motor Sport and open to Formula Holden racing cars. It was the 34th Australian Drivers' Championship and the second to be contested by Formula Holden cars. The championship winner was awarded the CAMS Gold Star.
The championship was won by Simon Kane driving a Ralt RT21.
Calendar
The championship was contested over eight rounds with one race per round.| Round | Race name | Circuit | State | Date | Winning driver | Winning car |
| 1 | Phillip Island | Victoria | 25 March | Simon Kane | Ralt RT21 | |
| 2 | Winton | Victoria | 8 April | John Briggs | Ralt RT21 | |
| 3 | Amaroo Park | New South Wales | 27 May | Mark Poole | Shrike 003 | |
| 4 | ACL Trophy | Mallala | South Australia | 10 June | Mark Skaife | SPA |
| 5 | Oran Park | New South Wales | 19 August | Mark Skaife | SPA | |
| 6 | Sandown | Victoria | 9 September | Mark Poole | Shrike 003 | |
| 7 | Winton | Victoria | 7 October | Simon Kane | Ralt RT21 | |
| 8 | Thalgo Trophy | Adelaide | South Australia | 3 November | Neil Crompton | Ralt RT20 |
Teams and drivers
The following teams and drivers competed in the 1990 Australian Drivers' Championship.| Team | Car | No | Driver |
| Skaife Racing P/L | Spa FB001 | 3 |  Points systemChampionship points were awarded on a 9–6–4–3–2–1 basis to the first six finishers at each round. Each driver could retain only his/her best seven results, any other points being discarded. |